V2X Message Frames for Autonomous Driving Intent Exchange
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Solution Overview
Problem
Current V2X communication systems are designed primarily for driver assistance and do not meet the enhanced requirements of higher levels of autonomous vehicles, lacking the necessary information exchange for accurate driving policy decisions.
Innovation Solution
Enhance V2X communication systems by incorporating a message frame that includes autonomous driving information, such as driving intention, capability, and mode data, which can be sent as a stand-alone message or an extension to the Basic Safety Message (BSM), allowing vehicles to share detailed information about their driving intentions, capabilities, and modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If current V2X communication systems are used for driver assistance, then basic safety information can be exchanged, but the systems cannot provide the enhanced information exchange required for higher levels of autonomous vehicles
Solution Approach 1:
The message frame is segmented into distinct fields: basic safety information fields (position, speed, heading) and autonomous driving information fields (driving intention, capability, mode). This segmentation allows the system to maintain compatibility with existing V2X infrastructure while adding specialized autonomous driving information exchange capabilities.
Solution Approach 2:
The patent adds a new dimension to V2X communication by incorporating autonomous driving information fields that operate alongside traditional basic safety information. This dimensional expansion enables the system to serve both driver assistance applications and higher-level autonomous vehicle applications simultaneously.
2Reliability
If basic safety messages are sent between vehicles, then fundamental collision avoidance information is exchanged, but detailed driving policy decision information is not available
Solution Approach 1:
The patent merges basic safety information exchange with autonomous driving information exchange into a unified message frame. This combination ensures that both fundamental safety requirements and advanced autonomous driving requirements are met simultaneously through a single communication protocol.
Solution Approach 2:
The message frame structure is designed to be universal, serving multiple functions: it provides basic safety information for all vehicles while simultaneously providing detailed autonomous driving information for Level 5 automation. The same message frame adapts to different automation levels without requiring separate communication systems.
3Ease of operation
If V2X systems only exchange position and speed data, then communication simplicity is maintained, but accurate driving policy decisions for autonomous vehicles cannot be made
Solution Approach 1:
The message frame is segmented into clearly defined fields with specific purposes: position and speed data for basic safety, and separate autonomous driving information fields for route intentions, behavior patterns, and capability data. This structured segmentation maintains communication simplicity through standardized formats while enabling comprehensive information exchange.
Data Source
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AI summary
An in-vehicle computing system and method that extracts driving intention data, driving capability data, and a driving mode data from one or more vehicle systems including an autonomous driving system. Autonomous driving information is derived from the extracted data. A message frame is created to include the autonomous driving information and sent to a V2X system.